<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <div class="title-container">
        <h3 class="title"><img v-if="logo" :src="logo" class="sidebar-logo"></h3>
        <h3 class="title">{{ title() }}</h3>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input ref="username" v-model="loginForm.username" placeholder="请输入用户名" name="username" type="text" tabindex="1" auto-complete="on" />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input :key="passwordType" ref="password" v-model="loginForm.password" :type="passwordType" placeholder="请输入密码" name="password" tabindex="2" auto-complete="on" @keyup.enter.native="handleLogin" />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>
      <el-form-item prop="code">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input class="code-input" ref="code" v-model="loginForm.code" placeholder="请输入验证码" name="code" type="text" tabindex="1" auto-complete="off" />
        <img class="code-img" :src="baseurl + '/user/verifyImage?codeId=' + loginForm.codeId + '&_=' + imgRandom" @click="randomImg">
      </el-form-item>
      <el-button
        :loading="loading"
        type="primary"
        size="medium"
        style="width:100%;margin-bottom:30px;"
        @click.native.prevent="handleLogin"
      >登录
      </el-button>

    </el-form>
  </div>
</template>

<script>

import {guid} from "@/utils";
import {title} from '@/settings'

export default {
  name: 'Login',
  data() {
    return {
      logo: '/static/image/logo.png',
      loginForm: {
        username: '',
        password: '',
        codeId: localStorage.getItem('appid'),
        code: ''
      },
      baseurl: process.env.VUE_APP_BASE_API,
      imgRandom: '',
      loginRules: {
        username: [{ required: true, trigger: 'blur', message: '请输入用户名' }],
        password: [{ required: true, trigger: 'blur', message: '请输入密码' }],
        code: [{ required: true, trigger: 'blur', message: '请输入图片验证码' }]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined
    }
  },
  created() {
    this.randomImg()
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    title() {
      return title
    },
    randomImg() {
      this.imgRandom = guid()
    },
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = 'text'
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.$store.dispatch('user/login', this.loginForm).then(() => {
            this.$router.push({ path: this.redirect || '/#/dashboard' })
            this.randomImg()
            this.loading = false
          }).catch(() => {
            this.randomImg()
            this.loading = false
          })
        } else {
          return false
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://user.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  ::v-deep .el-form-item__content {
    max-width: none !important;
  }

  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      position: relative;
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;

      .sidebar-logo {
        width: 30%;
      }
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
  .code-input, .code-img {
    display: inline-block;
    flex: 1;
  }
  .code-input {
    width: 200px;
  }
  .code-img {
    height: 100%;
    width: 120px;
    margin: 5px;
    float: right;
  }

}
</style>
